需要遠程簡單地獲得每臺服務器的cpu與memory使用情況，用python寫了一個腳本，發布一個http端口，當瀏覽器連上時，以json格式提供。

用curl連接時輸出：

#curl localhost:9999

{"cpu": 10, "mem": 50}

代碼如下：

import json

import os

import shutil

import subprocess

import sys

import time

from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer

from io import BytesIO

from SocketServer import ThreadingMixIn

from threading import Thread

cpu_mem_info={'cpu':0,'mem':0}

def read_cpu_usage():

with open('/proc/stat','r') as f:

line = f.readline()

fields = line.split()

total = long(fields[1])+long(fields[2])+long(fields[3])+long(fields[4])+long(fields[5])+long(fields[6])+long(fields[7])

used = long(fields[1])+long(fields[2])+long(fields[3])

print(used,total)

return (used,total)

def cpu_monitor():

global cpu_mem_info

while True:

(old_used,old_total) = read_cpu_usage()

time.sleep(3)

(new_used,new_total) = read_cpu_usage()

usage = (new_used-old_used)*100/(new_total-old_total)

cpu_mem_info['cpu'] = usage

print("cpu_monitor:{0}({1})".format(usage,time.asctime()))

def read_mem_usage():

with open('/proc/meminfo','r') as f:

line = f.readline()

fields = line.split()

total = long(fields[1])

line = f.readline()

fields = line.split()

used = long(fields[1])

return used*100/total

def mem_monitor():

global cpu_mem_info

while True:

usage = read_mem_usage()

cpu_mem_info['mem'] = usage

print("mem_monitor:{0}({1}".format(usage,time.asctime()))

time.sleep(3)

class CpuMemServerHandler(BaseHTTPRequestHandler):

global cpu_mem_info

def do_GET(self):

self.send_head()

f = BytesIO(json.dumps(cpu_mem_info).encode())

f.seek(0)

shutil.copyfileobj(f,self.wfile)

def send_head(self):

self.send_response(200)

self.send_header("Content-type",'text/html')

self.end_headers()

class CpuMemServer(ThreadingMixIn,HTTPServer):

pass

if __name__ == '__main__':

cpu_thread = Thread(target=cpu_monitor,args=())

cpu_thread.setDaemon(True)

cpu_thread.start()

mem_thread = Thread(target=mem_monitor,args=())

mem_thread.setDaemon(True)

mem_thread.start()

server = CpuMemServer(('',9999),CpuMemServerHandler)

server.serve_forever()

https模式？

####.....

server = CpuMemServer(('',9999),CpuMemServerHandler)

server.socket = ssl.wrap_socket(server.socket,keyfile="mykey.key",certfile="mycert.crt",server_side=True)

server.serve_forever()

總結

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